1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
adoni [48]
3 years ago
14

How much energy is required to raise the temperature of 10.7 grams of gaseous helium from 22.1 °C to 39.4 °C ?

Chemistry
1 answer:
Rainbow [258]3 years ago
5 0

Answer:

Q = 2640.96 J

Explanation:

Given data:

Mass of He gas = 10.7 g

Initial temperature = 22.1°C

Final temperature = 39.4°C

Heat absorbed = ?

Solution:

Specific heat capacity:

It is the amount of heat required to raise the temperature of one gram of substance by one degree. Specific heat capacity of He is 14.267 J/g.°C

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

ΔT = 39.4°C - 22.1°C

ΔT = 17.3°C

Q = 10.7 g× 14.267 J/g.°C ×  17.3°C

Q = 2640.96 J

You might be interested in
Explain what would happen to the air temperature at Riverdale School over the course of the
Ira Lisetskai [31]

Answer:

In each Amplify Science unit, students figure out

a phenomenon by asking questions, gathering

evidence, and coming up with an explanation of how

the phenomenon works. The Coherence Flowchart

visually represents the storyline of the unit, showing

the coherent flow of questions, evidence, and ideas that

support students as they build complex explanations

of the unit’s anchor phenomenon. The Coherence

Flowchart on the following pages (one chapter per

page) can be used to see the connections between

the questions that drive students’ experiences, the

evidence they gather, the ideas they figure out, and the

new questions that those ideas generate. The diagram

to the right explains the structure of a chapter in the

Explanation:

7 0
2 years ago
de The below to investigate the burning of a candle study it andwer the questions that following question . What would happen to
Eddi Din [679]

Answer:

When a candle burns, the hydrogen and carbon from the wax combine with the oxygen in the air to become carbon dioxide and water vapor. Most of the matter in the candle ends up as these two gases.

7 0
2 years ago
If South America were not there, explain how the direction of South equatorial current would be different
forsale [732]

Explanation:

South America land mass serves as a deflector for the South equatorial current. This deflection the current causes them to move in a different direction. If the Continent were not present the direction of the South equatorial current would not change and it would continue to flow in the west.

7 0
3 years ago
TIMED
zhannawk [14.2K]
Density = mass/volume
Density = 81g/0.9cm³
Density = 90g/cm³
: )
6 0
3 years ago
Read 2 more answers
What is happening at the atomic level to give rise to the observed energies in the flame tests and in the emission spectra
irina1246 [14]

Answer:

See explanation

Explanation:

According to the Bohr model of the atom, electrons are found in energy levels. Energy is absorbed or emitted when an electron moves from one energy level to another.

During flame test, electrons absorb energy and move to higher energy levels; they quickly return to ground state and emit the energy previously absorbed as a photon of light. This is seen as the colour imparted to the flame by the metal.

The emission spectrum tells us about the range of wavelengths emitted by an atom or compound when it is excited. At an atomic level, the electrons are moved to higher energy levels and as they return to ground state, they emit the various wavelengths that comprise the emission spectrum of any particular substance.

7 0
3 years ago
Other questions:
  • An electron is in a region outside the nucleus
    13·1 answer
  • What is a periodic element that is named after Einstein?
    11·2 answers
  • So3 +H2so4----H2s2o7????? How??
    9·1 answer
  • Why is ethanol a liquid at room temperature but ethane is a gas?
    14·1 answer
  • Given that Cu + 2HCI Cu2+ + 2CI- + H2(g) has an overall reduction potential of –0.34 V, what is a valid prediction about how thi
    5·2 answers
  • PLEASE ANSWER THIS HURRY
    15·1 answer
  • Which of this is the method by which fire extinguisher works?
    7·2 answers
  • Perform an on-line search to find real-world uses for the titration process. State what you find below.
    12·1 answer
  • What is the color of the flame when magnesium burns in air ​
    8·1 answer
  • How much of a 2.0 M NaCl solution is needed to make 205.0 mL of 0.15 M NaCl solution?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!